Stapler device or machine



May 29, 1962 N. s. CLAY STAPLER DEVICE: 0R MACHINE Filed Aug. 4, 1960 2Sheets-Shea?I 1 Q 50 U P iufm- Ni -Il LJ 1...!

Y Z6 I I 5! INVENToR.

A /vA/m/v 5. CLAY FIG. 3 BY May 29, 1962 '3 N. s. CLAY 3,036,306

` STAPLER DEVICE 0R MACHINE Filed Aug. 4, 1960l 2 Sheets-Sheet 2INVENTOR. /VT/-MN 5. CLAY United States York Filed Aug. 4, 1960, Ser.No. 47,438 4 Claims. (Cl. 1 3) This invention relates to stapler devicesor machines.

Staplers often comprise a staple magazine and staple cover pivotedthereto and prow'ded with plunger means to eject the staples, and meansto removably and pivotally latch the interpivoted magazine and cover tothe hase which carries an anvil, so that the magazine and cover may beused separately of the base, as a tacker. Users of such machines, asheretofore made, have had difficulty in connecting and disconnecting theinterpivoted magazine and cover from the base.

It is hence an object of this invention to provide a stapler of thecharacter described provided with a highly improved releasable latchmechanism for pivotally connecting the intel-pivotal magazine and cover,to the base; the construction being such that the latching and releasingof the magazine and cover may be easily and quickly accomplished withoutneed vfor skill or study or strength, and by an extremely simplemanipulation; the construction being such, furthermore, that when themagazine and cover are latched to the base, after each staplingoperation, the magazine is pressed by a spring mechanism, back to aposition parallel to yand spaced above the base.

Another object of this invention is to provide a stapling machine of thecharacter described in which the spring mechanism for moving the staplemagazine back to parallel position relative to the base after a staplingoperation, is utilized to retain the staple magazine and cover inlatched condition on the base.

Yet another object of this invention is to provide in a stapling deviceof the character described, a pawl held in position latching a pivot pinon the staple magazine, by spring mechanism, `and said pawl beingprovided with a button adapted to be pressed by a finger of the user torotate the pawl against the pressure of said spring mechanism, torelease the pivot pin and permit removal of the magazine and cover fromthe base; said device being provided further with means to guide thepivot pin to latching position, and said pawl having a finger providedwith :a latching hook to latch the pin on the magazine, and providedwith cam means to permit the pivot pin to engage the cam means androtate the pavvl against pressure of the spring mechanism, as the pivotpin is'moved toward latching position, until the pivot pin passes thehook of the ringer, to permit the spring mechanism to snap the hook ofthe nger into latching engagement with the pivot pin.

Still another object of this invention is to provide a device of thecharacter described in which the pawl is not mounted on any pivot pins,but is held in operative assembled relation to the `device by a springmechanism.

A further object of this invention is to provide a strong and ruggeddevice of the character described, which shall be relatively inexpensiveto manufacture, easy to manipulate, assemble and disassemble, and whichshall yet be practical and eicient to a high degree in use.

Other objects of this invention will in part be obvious and in parthereinafter pointed out.

'I'he invention accordingly consists in the features of construction,combinations of elements, and arrangement of parts which will beexemplified in the construction hereinafter described and of which thescope of invention will be indicated in the following claims.

arent N ice In the accompanying drawings in which is shown anillustrative embodiment of this invention,

FIG. 1 is a side elevational view of a stapling device embodying theinvention;

FIG. 2 is a cross-sectional view taken on line 2-2 of FIG. 1;

FIG. 3 is a cross-sectional view taken on line 3 3 of FIG. l;

FIG. 4 is a vertical longitudinal cross-sectional View of the latchingmechanism in latching position;

FIG. 5 is a view similar to FIG. 4, but showing the pawl lpressed toreleasing position; and

FIG. 6 is a perspective view of the base bracket for the staplingmachine.

Referring now in detail to the drawing, 1li designates a -stapler deviceembodying the invention.

'Ihe same comprises a base 11, a staple magazine 12 and ya cover 13provided with usual plunger means (not shown) for driving staples fromthe magazine.

The base 11 comprises a member 15 made of die stamped sheet metal or thelike material. Said member 15 has a top wall 16 which slants somewhatforwardly and upwardly. -Extending from the top wall are side walls 17,a front wall 18 and a rear wall 19. Said side, front Kand rear walls arecurved transversely and have lower edges.

Attached to the underside of the rear end of the base, `as by rivet 20,is a pad 21 of rubber-like material having portions 22 contacting theunder edges of the rear wall 19 and adjacent portions of the side walls17.

Adjacent its front end, said top wall 16 has a depression 24 for a usualstaple anvil 25.

Adjacent its rear end, wall 16 is formed with a longitudinal,rectangular depressed wall 26. Said wall 2,6 is formed adjacent itsfront end, with a transverse slot 27. Rearwardly of said slot 2.7, wall26 is formed with a round hole 28 located on the longitudinal axis ofthe base. Rearwardly of hole Z8, said depressed wall 26 is formed with-a longitudinal slot 2.9 in line with hole 28, and terminating short ofthe rear end of said depressed wall.

Fixed to the top of depressed wall 26 is a base bracket 30 having abottom wall 31 contacting and nested on the upper surface of saiddepressed wall and welded or otherwise attached thereto. Extending upfrom the bottom wall 31, are parallel, vertical side walls 32 havingupwardly and forwardly curved top edges 33, and front edges 34. Thebottom wall 31 is 4formed with a transverse slot 35 registering withslot 27 and with a round hole 38 registering with hole 28. It is alsoformed with a short slot 39 registering with the front end of slot 29and terminating rearwardly of the front end of slot 29.

Contacting walls 26, 31 are formed adjacent their rear ends withregistering openings 26a, 31a receiving a rivet 4d which attaches thehorizontal rearwardly extending foot 41 of an angle shaped stop member42 to the top of said wall 31. Extending up from the forward end of foot41 is a flange 43 having an upper edge 44 disposed below the upper edge33 of side walls 32 of the base bracket.

Side walls 32 are formed adjacent their 'rear ends, with outwardlypressed walls 45 forming inner downwardly extending grooves 46, eachhaving an upper flaring mouth 45a yand a half round narrower lower end46b.

Extending loosely through registering openings 28, 38 is a pin 5@ havinga head 51 at its upper end, and a head 52 at its lower end. Interposedbetween wall 31 of base bracket 30 and head 51 and surrounding pin 5d,is a coil compression spring 53 of increasing diameter toward Vits lowerend.

On lower head 52 is a washer 54. Assembled with the ing the transversepin 76. Said pin Y .adapted to projectintogrcoves 46. Y n Y Y "ToVconnect the interpivote'd staplelmagazine and cover z to the base, thepin 70 is Ymanipulateki so that its ends 70a move,down through theflaring portions' 46a. of

grooves 46.' As the centerY of thejpin 711 contactsedgeVY 3 base 11, isan operating member 55 having an intermediate portion 56 formed with ahole 57 through which pin 50 passes, and resting on washer V54, andlocated beneath the depressed wall 26. At the forward end of Asaidintermediate portion 56 is an upstanding finger lor ange 58 passingupwardly through registering transverse slots '27, 35. The upper edge58a ofange 58 issubstantially at the level of edge 44 of flange d3.v`Said intermediate portion 56 contacts the underside of wall 26 adjacentto its slot v27. j ,A

i At the rear endy -of said intermediate portion 56, is .a downwardlyextending web '6d from the lower end of which extends rearwardly atongue`61 disposed below wall 26 in spaced relation thereto. I

Also assembled with the base is a pawl 64 comprising a portion 65disposed in a vertical plane `and a push button portion 66 at one end ofthe vertical portion in a plane at right Vangles thereto.' r Saidportion65 has a front nger 67 passing upwardly through slots Z9, 39, anintermediate portion 68 disposed in slot 29-and below wally 31 ofbracket Sil, and lying over tongue 61, and a rear portion 69 projectingdownwardly and rearwardly, and disposed in back of the rear end of Vsaidtongue. Y

The operative position of pawl64, hookingly engaging a transverse pivot`pin 70 on theY staple magazine 12, is illustrated in FIGS. 1 and 4. Thisis the normal position of the pawl. Portion 65 of Vpawl 64, has aforwardly extend-ing lug 71 at the lower, front endY of iinger V67,located in the forward end of slot 29 and eugagingthe `underside ofwallV 31 just forwardly of slot 3:9,` in the engaging Vor normalposition of the pawl, asY shown in FIG. 4. The rear lower end of finger67 contacts the rear of slot 39. V Y

Portion 68 has an upper straight V,edge 72 extending rearwardly ofiinger 67 and contacting the underside of wall 31, insaid engagingposition ofthe pawl. V Extending 1 from the rear end of edge Y72 is vanupper Vstraight edge Y 73 disposed at an angle .ofabout l5? totheunderside of wallV 31, in said engagingY orY normal condition of thepawl. L

At the middle of the underside of portion 68 is a down.- wardlyprojecting lug V7d contacting the upper side of tongue 61 adjacent therear endY ofthe latter. Button 6 6 iselocated below and rearwardlyoftongue 61. Button 66 may be square in shape, if desired. A 1 i t will-now berundervstood that spring 53`p`ressesV pin upwardly so that tongue61 presses up on lug 74,10 rotate pawl 64 about the fulcrurn point 75 atthe junction of edges 72, l73, to keep edge 72 and lug 71 in Contactwith Y wall31.,

ItV will be noted that fulcrum 75 is disposed rearwardly of-lug 74 asshown in the drawing. I p Y o At the upper end of finger 67 is arearwardly "extending hook 76 xhaving a curved hooked under edge 77,andan upper downwardly and rearwardly slanting edge 7 8.

of grooves 46'when the magazine is assembled. v

The -staple magazine 12 hasside walls 81, and arb'ottom wall 82. YForwardly ofthe rear end of the magazine', Yits side walls `51 havedownwardly extending ears 83:V carryilfhas vends .70a

78,pawl64is rocked in aV clockwise directionLl-ooking at fulcrum 75, tothe position of FIG. 4, in which position the pin is locked and themagazine cover cannot be removed.

The bottom wall of the staple magazine contacts the upper edges of anges43, 58, and hence spring 53 normally keeps the magazine parallel to andspaced above the base. VHowever when the stapler is operated, themagazine will pivot about the axis of its pin '70, causing depression ofange 58 and increased pressure on spring 53 to again lift the magazinewhen hand pressure is removed from the stapler.

To release the magazine-cover, it is merely necessary to pressV up onbutton 66, causing the pawl 64 to rock in a clockwise direction aboutfulcrum 75, depressing tongue 61 and disengaging Vhook 76 from the pin70 to permit lifting out the magazine-cover.

lt will thus be seen that there Vis provided an apparatus in which theseveral objects of this invention are achieved and which is well adaptedto meet the conditions of practical use.

As possible embodiments'might be made of the above invention, and asvarious changes might be made in the embodiment above set forth, it isto be understood that all matter herein set forth or shown in theaccompanying drawings is to be interpreted Vas illustrative and not Yina limiting sense. Y

I claim:

l. In a stapling device, a base having a wall, a base bracket having aVbottoml -wall fixed to said wall of the base, said bracket havingupwardly extending side walls formed with guide grooves and with bearingmeans at the ends of Ysaid grooves, said wall of said base being formedwith a hole and with a longitudinal siot, said bottom wall of thebracket being formed with a hole registering with the hole in ksaid wallof the base, and with a longitudinal slot registering with partrof thelongitudinal slot in said Wall ofvsaid base, a pinpassing through saidregistering holes and having heads at its upper and lower ends, a

member having a portion formed with a hole registering withsaidaforementioned'holes` and through which the pin passes, said portionbeing Vinterposed between the lower head ofthe pin and the underside ofsaid wall of the base, a coil compressed spring interposed between thebottom wall of the bracket and the upper head of said pin, said memberhaving a rearwardly extending tongue, a pawl having an intermediateportioninterposed between said tongue and the underside of'said 'bottomwall of the bracket and extending in thelongitudinal slot in said basewall, said pawl having a iinger extending up through the registeringlongitudinal slots and provided with a hook i crurn contacting theunderside of said bottom wall, and

55 The'staple magazine 12 and cover 13Y may be of usualV construction,being interpivoted by atransverse pivot pin Y The hook 76 holds thepin7i! seated, inl portions 46h, I

FIGS. 4 and 5, about its fulcrum 75therebyicausing Vlug 74mdepres'sJ-tongue61y and-tensionffurther, the,

spring 53. When the pin 76 passen the hook 76spring 5.3, j causingupwardpressure of the tonguef61 against lug'74,

` willV causecounterclockwise VrotationofV the pawl about a lug disposedforwardly of thefulcrumcontacting said tongue, in combination Withastaple magazine having a :fixed pin, Vsaid xed pin Vhaving ends engagingsaid bearingmeans Vand said hook engaging said pin to hold its ends onsaid bearing means, saidwalls of said base and bracket havingregistering transverse slots, and said memberv having a flange at itsforward 'end projecting up through said'regis-tering transverse slotsand engaging said Y magazine.

2. AThe combination of claim l, in combination with a stop iixed to saidbottom wallrearwardly of said guide Vgroovesand engaging said magazine.

Y V3.74In a staplerra base, a staple magazine, a`pin on said staplemagazine, said baseV having guide means for said pin, `and bearing meansforthe pin at the end of the .guide-means, a pawlrockingly mounted onsaid base'and Vhaving bearing means to'releasably engage saidrpin andhold said pin on said ,rst mentioned bearingV means, spring means tomove( said pawl "intoV pin engaging posi- Ytion, therebyremovablyconnecting said magazine torsaid base'forw rotation `about the axis ofVsaid pin, said pawl having'means in the path of thepinnmoving throughtheguide meanstoward'said first bearing means, to' move 3,036,306 5 6 saidpin engaging means out of the guide means to per- References Cited inthe le of this patent mit said pin to engage said rst lbearing means,said spring UNITED STATES PATENTS means including means to resilientlybias said magazine upwardly relative to the base, forwardly of said pin.ggg; i h; 212 4. The combination of claim 3, in combination with 5 g sxed stop means on the base engaging the underside of FOREIGN PATENTSsaid magazine, rearwardly of said pivot pin. 1,004,065 France Nov. 2.1,1951

